We are a relatively small company and designed in this part to a product less than 2 years ago as it was readily available from many sources. But just making new batch of boards ordered but we find its now obsolete.

Anyone suggest a direct drop-in alternative hardware and firmware wise just to buy us time until next build, either Cypress or alterntive maker,.

We clearly need to look at this properly for longer term and the information you have provided will help.

I am based in the UK and at the moment I can easily source this part which looks like it will drop in and work physically and electrically for us and I have ordered samples for tomorrow. Could you just confirm it should also be a reasonable drop in replacement for S25FL208K0RMFI041?

Yes you can use S25FL116K0XMFI041 it as replacement for S25FL208K0RMFI041 and follow the Migration application note provided in the previous interaction. Both are pin and functional compatible.

Please note that the part S25FL116K0XMFI041 is EOLed. Glad to hear that you were able to get it easily. In case if you could not get it you can buy S25FL116K0XMFA041 which is drop in for S25FL116KMFI041 part.

Product termination notice for the part S25FL116KMFI041 is given below :